Let ABCD be a parallelogram the equation of whose diagonals are `AC : x+2y =3`; BD: 2x + y = 3. If length of diagonal` AC =4` units and area of `ABCD = 8` sq. units.(i) The length of the other diagonal is (ii) the length of side AB is equal toA. `2sqrt(10)//3`B. `4sqrt(10)//3`C. `8sqrt(10)//3`D. none of these

Let ABCD be a parallelogram the equation of whose diagonals are `AC :

1.	Let ABCD be a parallelogram the equation of whose diagonals are `AC : x+2y =3`; BD: 2x + y = 3. If length of diagonal` AC =4` units and area of `ABCD = 8` sq. units.(i) The length of the other diagonal is (ii) the length of side AB is equal toA. `2sqrt(10)//3`B. `4sqrt(10)//3`C. `8sqrt(10)//3`D. none of these
Answer» Correct Answer - A In `DeltaCPB,` `"cos " theta = (PC^(2) + PB^(2)-BC^(2))/(2PC xx PB)` `"or "BC = (2sqrt(10))/(3)`

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